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SBX-4
The World’s Most Popular DGPS Beacon Module
Provide a reliable source of differential corrections with the SBX-4™Radiobeacon Board that augments a separate GPS receiver with free accuracy-improving correction data from networks of beacon stations located throughout the world. With dual-channel architecture to ensure the best station is always being decoded, the SBX-4 delivers high performance reception and a wide range of functionality including the capability to be tuned to signal strength or station distance. The SBX-4 outputs the industry standard RTCM SC-104 format accepted by differential-ready GPS receivers and can also be configured and monitored with NMEA 0183 protocol.
Key SBX-4 Advantages • Certified IEC 61108-4 compliant
• Low power consumption extends battery life
• Dual-channel design allows strongest signal or closest station tracking
• Power and signal lock LED’s permit visual verification of receiver status
• Dual serial ports accommodate separate RTCM and NMEA communications
• Reverse-compatibility ensures operation in existing SBX–2 and SBX–3 integrations
• Patented ceramic filter blocks out-of-band signals, optimizing reception
• Boot loader provides firmware upgrade reliability
www.hemispheregps.com •
[email protected]
SBX-4 Operating Specifications
Patented front-end filter response
Channels: Frequency Range: Channel Spacing: MSK Bit Rates: Operating Modes: Cold Start Time: Reacquisition Time: Demodulation: Sensitivity: Out of Band Rejection: Spurious Response: Ripple (in-band): Dynamic Range: Frequency Offset: Adjacent Channel Rejection: Antenna Input Impedance:
The front-end filter in the SBX-4 passes beacon frequencies at a consistent strength while blocking out-of band signals. The result is low-noise, high performance beacon reception. The following figure illustrates the frequency response of this filter.
2-channel parallel tracking 283.5 to 325.0 kHz 500 Hz 50, 100, and 200 bps Manual, automatic and database < 1 minute typical < 2 seconds typical Minimum shift keying (MSK) 2.5 µV/m for 6 dB SNR @ 200 bps 60 dB < 204 kHz and > 404 kHz < -55 dB (0.1 MHz to 1.6 MHz) 3 dB 100 dB ± 8 Hz (~ 27 ppm) 61 dB ± 1 dB @ fo ± 400 Hz 50 Ω
Communications Serial Ports: Interface Level: Baud rates: Correction Input / Output Protocol:
2 full-duplex HCMOS, tracks input voltage 4800, 9600, 19200, 38400, and 57600 RTCM SC-104, NMEA 0183
Power
Input Voltage Range: Power Consumption: Current Consumption: Antenna Voltage Output:
-30°C to +70°C (-22˚F to +158˚F) -40°C to +80°C (-40˚F to +176˚F) 95% non-condensing EN50081-4-2 ESD
J200 connector Pin(s) 1,3 2 4
Signal Analog ground Antenna input Antenna power output
3.3 to 5.5 VDC < 0.25 W @ 3.3 VDC (no antenna) < 70 mA @ 3.3 VDC (no antenna) 5 VDC applied externally
J300 connector Pin(s) 1,2 3,4 14 15 16 17 18 19 21,22,23,24
Signal Antenna power input Power supply input TXD0, output TXD1, output Lock indicator (active high) RXD0, input RXD1, input External reset input (active low) Digital ground
Mechanical Dimensions: Weight: Connector J1: Connector J2:
• Select operating mode • Query receiver performance and operating status • Specify communication baud rate up to 57600 bps • Reset receiver from operation to simulate a cold start • Tabulate and output results of frequency scan
Pin-out
Environmental Operating Temperature: Storage Temperature: Humidity: EMC:
Proprietary commands
7.6 L x 5.1 W x 1.4 H (cm) 3.0 L x 2.0 W x 0.54 H (in) 30 g (1.1 oz) 1 x 4 pin header, 0.1” spacing 2 x 12 pin header, 0.1” spacing
Authorized Distributor:
HEMISPHERE GPS 4110 - 9th Street S.E. Calgary, AB T2G 3C4 Canada
Phone: 403.259.3311 Fax: 403.259.8866
[email protected] www.hemispheregps.com
Copyright 2010, Hemisphere GPS. All rights reserved. Specifications subject to change without notice. Hemisphere GPS, Hemisphere GPS logo, and SBX-4 are trademarks of Hemisphere GPS. Rev. 11/10.
